1. Ua ntej siv, lub hose yuav tsum tau kuaj xyuas qhov kev puas tsuaj, kev laus, looseness, thiab lwm yam, thiab cov hoses puas yuav tsum tsis txhob siv.
2. Thaum siv, tsis txhob khoov siab, siab sib tw, siab ncab, thiab lwm yam ntawm lub hose kom tsis txhob tawg lossis tawg ntawm lub hose.
3. Thaum siv, qhov sib txawv hose specifications thiab connectors yuav tsum raug xaiv raws li cov kev tu vaj tse sib txawv los xyuas kom meej tias cov hose kev twb kev txuas yog ruaj, nyab xeeb thiab txhim khu kev qha.
4. Tsis tu ncua xyuas thiab tswj lub hose, thiab hloov cov laus thiab cov hoses puas nyob rau lub sij hawm kom muaj kev ruaj ntseg thiab kev ntseeg siab ntawm cov khoom.
Nyob rau hauv cov ntsiab lus, lub siab-siab tu hose yog ib tug haib, superior, nyab xeeb thiab txhim khu kev qha tu khoom, uas yog dav siv nyob rau hauv ntau yam lag luam, tsheb, nkoj, kev tsim kho thiab lwm yam kev lag luam. Thaum siv, peb yuav tsum ua raws li cov txheej txheem kev khiav haujlwm, ua tib zoo saib xyuas kev nyab xeeb, thiab tsis tu ncua xyuas thiab tswj xyuas kom muaj kev ua haujlwm zoo thiab kev ntseeg siab ntawm cov khoom siv.